1 files changed, 109 insertions, 0 deletions
diff --git a/internal/cache/mutes.go b/internal/cache/mutes.go
new file mode 100644
index 000000000..9ad7736a0
--- /dev/null
+++ b/internal/cache/mutes.go
@@ -0,0 +1,109 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package cache
+
+import (
+	"time"
+
+	"code.superseriousbusiness.org/gotosocial/internal/config"
+	"code.superseriousbusiness.org/gotosocial/internal/log"
+	"codeberg.org/gruf/go-structr"
+)
+
+type MutesCache struct {
+	StructCache[*CachedMute]
+}
+
+func (c *Caches) initMutes() {
+	// Calculate maximum cache size.
+	cap := calculateResultCacheMax(
+		sizeofMute(), // model in-mem size.
+		config.GetCacheMutesMemRatio(),
+	)
+
+	log.Infof(nil, "cache size = %d", cap)
+
+	copyF := func(m1 *CachedMute) *CachedMute {
+		m2 := new(CachedMute)
+		*m2 = *m1
+		return m2
+	}
+
+	c.Mutes.Init(structr.CacheConfig[*CachedMute]{
+		Indices: []structr.IndexConfig{
+			{Fields: "RequesterID,StatusID"},
+			{Fields: "RequesterID,ThreadID", Multiple: true},
+			{Fields: "StatusID", Multiple: true},
+			{Fields: "ThreadID", Multiple: true},
+			{Fields: "RequesterID", Multiple: true},
+		},
+		MaxSize: cap,
+		IgnoreErr: func(err error) bool {
+			// don't cache any errors,
+			// it gets a little too tricky
+			// otherwise with ensuring
+			// errors are cleared out
+			return true
+		},
+		Copy: copyF,
+	})
+}
+
+// CachedMute contains the details
+// of a cached mute lookup.
+type CachedMute struct {
+
+	// StatusID is the ID of the
+	// status this is a result for.
+	StatusID string
+
+	// ThreadID is the ID of the
+	// thread status is a part of.
+	ThreadID string
+
+	// RequesterID is the ID of the requesting
+	// account for this user mute lookup.
+	RequesterID string
+
+	// Mute indicates whether ItemID
+	// is muted by RequesterID.
+	Mute bool
+
+	// MuteExpiry stores the time at which
+	// (if any) the stored mute value expires.
+	MuteExpiry time.Time
+
+	// Notifications indicates whether
+	// this mute should prevent notifications
+	// being shown for ItemID to RequesterID.
+	Notifications bool
+
+	// NotificationExpiry stores the time at which
+	// (if any) the stored notification value expires.
+	NotificationExpiry time.Time
+}
+
+// MuteExpired returns whether the mute value has expired.
+func (m *CachedMute) MuteExpired(now time.Time) bool {
+	return !m.MuteExpiry.IsZero() && !m.MuteExpiry.After(now)
+}
+
+// NotificationExpired returns whether the notification mute value has expired.
+func (m *CachedMute) NotificationExpired(now time.Time) bool {
+	return !m.NotificationExpiry.IsZero() && !m.NotificationExpiry.After(now)
+}